1. National Institutes of Health, National Human Genome Research Institute, Translational and Functional Genomics Branch, Microbial Genomics Section, Bethesda, Maryland, USA
2. School of Life Sciences, Arizona State University, Tempe, Arizona, USA
3. National Institutes of Health, National Cancer Institute, Center for Cancer Research, Bethesda, Maryland, USA
4. University of Minnesota Medical School, Minneapolis, Minnesota, USA